Action and reaction – True or false

The video tutorial explains the concept of unbalanced and balanced forces. Unbalanced forces can cause an object to change its speed, either speeding up or slowing down. In contrast, when an object is moving at a constant speed or is stationary, the forces acting on it are balanced.

What can unbalanced forces do to an object's speed?

• Keep it constant

• Change it

• Make it disappear

• Reverse it

How do unbalanced forces affect an object's motion?

• They make it stop

• They make it move in circles

• They can speed it up or slow it down

• They have no effect

What happens to an object when the forces acting on it are balanced?

• It changes direction

• It slows down

• It moves at a constant speed or stays still

• It speeds up

Which of the following is true about balanced forces?

• They cause objects to explode

• They make objects fly

• They result in constant speed

• They cause acceleration

When an object is stationary, what can be said about the forces acting on it?

• They are unbalanced

• They are balanced

• They are non-existent

• They are increasing